EP0279874B1 - Einspannvorrichtung fur Bildzylinder - Google Patents

Einspannvorrichtung fur Bildzylinder Download PDF

Info

Publication number
EP0279874B1
EP0279874B1 EP87102480A EP87102480A EP0279874B1 EP 0279874 B1 EP0279874 B1 EP 0279874B1 EP 87102480 A EP87102480 A EP 87102480A EP 87102480 A EP87102480 A EP 87102480A EP 0279874 B1 EP0279874 B1 EP 0279874B1
Authority
EP
European Patent Office
Prior art keywords
clamping
flange
levers
image
cylinder
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP87102480A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0279874A1 (de
Inventor
Manfred Deisler
Ralf Balzeit
Reinhard Gesell
Bernd Lassen
Wolfgang Dinse
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dr Ing Rudolf Hell GmbH
Original Assignee
Dr Ing Rudolf Hell GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to EP87102480A priority Critical patent/EP0279874B1/de
Application filed by Dr Ing Rudolf Hell GmbH filed Critical Dr Ing Rudolf Hell GmbH
Priority to DE8717891U priority patent/DE8717891U1/de
Priority to DE8787102480T priority patent/DE3762790D1/de
Priority to PCT/DE1988/000084 priority patent/WO1988006389A1/de
Priority to US07/272,890 priority patent/US4902156A/en
Priority to JP63501725A priority patent/JPH01500397A/ja
Publication of EP0279874A1 publication Critical patent/EP0279874A1/de
Priority to SU884356706A priority patent/RU1775054C/ru
Application granted granted Critical
Publication of EP0279874B1 publication Critical patent/EP0279874B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
    • B23B31/02—Chucks
    • B23B31/10—Chucks characterised by the retaining or gripping devices or their immediate operating means
    • B23B31/12—Chucks with simultaneously-acting jaws, whether or not also individually adjustable
    • B23B31/18—Chucks with simultaneously-acting jaws, whether or not also individually adjustable pivotally movable in planes containing the axis of the chuck
    • B23B31/185—Chucks with simultaneously-acting jaws, whether or not also individually adjustable pivotally movable in planes containing the axis of the chuck moving first parallel to the axis then pivotally in planes containing the axis of the chuck
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/04—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa
    • H04N1/06—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using cylindrical picture-bearing surfaces, i.e. scanning a main-scanning line substantially perpendicular to the axis and lying in a curved cylindrical surface
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T24/00—Buckles, buttons, clasps, etc.
    • Y10T24/45—Separable-fastener or required component thereof [e.g., projection and cavity to complete interlock]
    • Y10T24/45225—Separable-fastener or required component thereof [e.g., projection and cavity to complete interlock] including member having distinct formations and mating member selectively interlocking therewith
    • Y10T24/45466—Separable-fastener or required component thereof [e.g., projection and cavity to complete interlock] including member having distinct formations and mating member selectively interlocking therewith having electric or fluid powered, actuation or release, of interlock
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/22—Joints and connections with fluid pressure responsive component
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/59—Manually releaseable latch type
    • Y10T403/591—Manually releaseable latch type having operating mechanism
    • Y10T403/593—Remotely actuated
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/60—Biased catch or latch
    • Y10T403/608—Pivoted

Definitions

  • the invention relates to devices for clamping image cylinders in drum scanners.
  • the images to be scanned are always attached as slides on the outer surface of a crystal-clear, transparent cylinder, the so-called image cylinder.
  • a light source carried axially inside the cylinder shines through the image when it is scanned line-by-line by the interaction of the rotary movement of the cylinder and the axial feed movement of the externally guided scanning element in the form of a helix with a small pitch.
  • Carrying the light source in the cylinder would be quite complicated if the image cylinder was stored on both sides.
  • it is desirable to alternately prepare image cylinders outside the scanner i. H. glue the slides on precisely and, if necessary, determine the setting values for the scanner beforehand and then clamp the cylinder prepared in this way in a precisely rotating manner using a suitably designed clamping device.
  • the present invention has set itself the task of specifying clamping devices for image cylinders, which receives the cylinders on the fly and clamps exactly concentrically and firmly regardless of the skill of the operator. Vertical centering and wobble centering are strictly separated from each other.
  • Levers 10 are also placed on the eccentric shafts and are articulated to sliders 12 by means of coupling 11.
  • the tensioning levers 8 have link guides 13, into which pins 14 inserted into the slides 12 engage.
  • the clamping levers 8 have hook-shaped clamping claws 15.
  • the slides 12 are guided by means of slots 16 on pins 16a which are embedded in the flange 4.
  • the slides 12 are connected by means of piston rods 17 to the pistons 18 of three pneumatic cylinders 19 attached to the shaft 1.
  • the cylinder spaces to the right of the piston 18 are connected to the bore 6 in the shaft 1 by bores 20.
  • Compression springs 21 push the pistons 18 into their left end position when no negative pressure is active.
  • three preferably hardened contact surfaces 22 are embedded, the end faces of which run exactly centrally for the mounting of the shaft 1, which, for. B. can be effected by finishing (grinding) after assembly.
  • An axially displaceable sensing ring 23 is placed on the outside of the flange 4 and is held in its left end position by compression springs 24. As shown below, it works together with three proximity switches 25, which are evenly distributed over the circumference and are arranged in the housing 3.
  • the image cylinder 26 to be clamped has at its right end a flange 27 which is screwed to a clamping ring 28.
  • a relatively rigid membrane 29 is clamped between the flange 27 and the clamping ring 28.
  • the membrane 29 has a slightly nozzle-shaped central bore 31.
  • the central bore 31 runs exactly centrally to the cylinder circumference.
  • the image cylinder is first placed slightly against the cone 5 with the central bore 31 of the membrane 29, as shown in FIG. 1.
  • the image cylinder 26 is thus already centered with respect to the vertical runout. If it is now pushed further to the right, the membrane 29 bends slightly, as shown in FIG.
  • the clamping ring 28 comes to rest against the sensing ring 23 and pushes it against the springs 24 to the right until the clamping ring 28 bears on the three contact surfaces 22.
  • the image cylinder 26 is thus also centered with respect to wobble. In this position, the three proximity switches 25 are activated by the sensing ring 23.
  • FIG. 3 A variant of the tensioning device according to the invention is shown in FIG. 3.
  • the radial centering takes place here through a pin with a spherical, preferably hardened head 34, which is attached in the middle of the flange 27 and engages in a centering hole 33 of the shaft 1, the surface of which is also preferably hardened.
  • this variant has a retaining hook 32 which is attached to the flange 4.
  • the mechanism for actuating the tensioning lever 8 corresponds to the version described above and is therefore not shown in FIG. 3 in order to keep the figure clear.
  • FIGS. 1 and 2 the flange in FIG. 3 is shown rotated by 30 ° ; ie the holding hook 32 is exactly between two clamping levers 8.
  • Control elements which are well known and are therefore not described in detail here, ensure that the holding hook 32 always points upwards when the machine is at a standstill. Accordingly, one of the contact surfaces 22 is always vertically below it.
  • the operator simply hangs the cylinder 26 with the attachment 30 onto the holding hook 32.
  • the centering ball 34 engages in the centering hole 33, and the flange 27 lies against the contact surface 22 below by the weight of the image cylinder Operator thus has both hands free.
  • the holding hook 32 is dimensioned so that the flange 27 is close to the two upstanding contact surfaces 22, so tight that the clamping levers 8 engage securely behind the projection 30 when actuated.
  • the cylinder which is already radially centered here by means of centering ball 34 and centering bore 33, is thereby pulled axially firmly against all three contact surfaces 22 and is thus also centered with respect to wobble.
  • the sensing ring 23 shown in the first embodiment and the proximity switches 25 are of course omitted in this variant.
  • the application of the invention is not limited to the clamping of image cylinders alone. Rather, it can be used wherever components with standardized clamping flanges are often to be clamped alternately quickly, centrically and independently of the skill of the operator.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Preparing Plates And Mask In Photomechanical Process (AREA)
  • Clamps And Clips (AREA)
  • Automatic Assembly (AREA)
  • Facsimile Scanning Arrangements (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Manipulator (AREA)
EP87102480A 1987-02-21 1987-02-21 Einspannvorrichtung fur Bildzylinder Expired - Lifetime EP0279874B1 (de)

Priority Applications (7)

Application Number Priority Date Filing Date Title
DE8717891U DE8717891U1 (de) 1987-02-21 1987-02-21 Einspannvorrichtung für Bildzylinder
DE8787102480T DE3762790D1 (de) 1987-02-21 1987-02-21 Einspannvorrichtung fur bildzylinder.
EP87102480A EP0279874B1 (de) 1987-02-21 1987-02-21 Einspannvorrichtung fur Bildzylinder
US07/272,890 US4902156A (en) 1987-02-21 1988-02-18 Mounting device for image cylinders
PCT/DE1988/000084 WO1988006389A1 (en) 1987-02-21 1988-02-18 Tensioning device for film cylinders
JP63501725A JPH01500397A (ja) 1987-02-21 1988-02-18 画像シリンダのための緊定装置
SU884356706A RU1775054C (ru) 1987-02-21 1988-10-20 Устройство дл центрованного закреплени формного цилиндра барабанной сканирующей системы

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP87102480A EP0279874B1 (de) 1987-02-21 1987-02-21 Einspannvorrichtung fur Bildzylinder

Publications (2)

Publication Number Publication Date
EP0279874A1 EP0279874A1 (de) 1988-08-31
EP0279874B1 true EP0279874B1 (de) 1990-05-16

Family

ID=8196776

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87102480A Expired - Lifetime EP0279874B1 (de) 1987-02-21 1987-02-21 Einspannvorrichtung fur Bildzylinder

Country Status (6)

Country Link
US (1) US4902156A (ja)
EP (1) EP0279874B1 (ja)
JP (1) JPH01500397A (ja)
DE (2) DE8717891U1 (ja)
RU (1) RU1775054C (ja)
WO (1) WO1988006389A1 (ja)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5291392A (en) * 1992-02-19 1994-03-01 Gerber Systems Corporation Method and apparatus for enhancing the accuracy of scanner systems
US5515182A (en) * 1992-08-31 1996-05-07 Howtek, Inc. Rotary scanner
GB2280818B (en) * 1993-08-06 1998-01-07 Itek Colour Graphics Ltd Rotary drum scanner
GB2288152B (en) * 1994-04-07 1997-09-24 Cash Read Simon Hydrostatic release device
DE19533750A1 (de) * 1995-09-12 1997-03-13 Hell Ag Linotype Spannvorrichtung zur Verbindung wechselbarer Abtasttrommeln mit dem Rotationsantrieb von Trommelscannern
US5672112A (en) * 1995-11-16 1997-09-30 Sikorsky Aircraft Corporation Zero clearance locking mechanism for a disconnect coupling device
DE19548848C1 (de) * 1995-12-27 1996-09-12 Dornier Gmbh Lindauer Webschaftkupplung mit einer Entkupplungsvorrichtung
DE69719493T2 (de) * 1996-03-29 2003-12-24 Waukesha Tool & Stamping, Inc. Ringförmiger flansch für wellen
US5815895A (en) * 1996-12-07 1998-10-06 Carlson; Bradley O. Remote control latch system
US5910651A (en) * 1997-07-15 1999-06-08 Gerber Systems Corporation Method and apparatus for image nonlinearity compensation in scanning systems
FR2850306B1 (fr) * 2003-01-29 2006-01-20 Sandvik Tobler Mandrin pince
US6935806B2 (en) * 2003-06-20 2005-08-30 Waukesha Tool & Stamping, Inc. Hinged annular shaft flange
JP2007009606A (ja) * 2005-07-01 2007-01-18 Muroto Tekkosho:Kk パワーショベルのアタッチメント取付具の安全装置
CN101153525B (zh) * 2006-09-30 2013-01-09 Ge医疗系统环球技术有限公司 连接/断开机构及组合装置
US9341283B2 (en) 2013-09-18 2016-05-17 Itt Manufacturing Enterprises Llc. Self setting and stabilized switch target

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1794633A (en) * 1926-10-26 1931-03-03 Marchiano Rinaldo Gas meter
US2361763A (en) * 1943-03-15 1944-10-31 Jack & Heintz Inc Pneumatic finger chuck
US2657259A (en) * 1949-10-19 1953-10-27 Western Union Telegraph Co Facsimile transmitter
BE518007A (ja) * 1952-02-29
US3142102A (en) * 1962-01-03 1964-07-28 Willard J Saunders Automatic release device for seat belts
FR2094325A5 (ja) * 1970-06-17 1972-02-04 France Etat
DE2732597A1 (de) * 1977-07-19 1979-02-15 Gruner & Jahr Vorrichtung zur rapportkontrolle einer vorlage auf der trommel eines scanners
CH622837A5 (ja) * 1977-12-06 1981-04-30 Saurer Ag Adolph
SE466090B (sv) * 1987-05-07 1991-12-16 3R Syst Int Ab Anordning foer loesbar och repeterbar fastspaenning av tvaa foeremaal vid varandra

Also Published As

Publication number Publication date
JPH01500397A (ja) 1989-02-09
JPH0375114B2 (ja) 1991-11-29
US4902156A (en) 1990-02-20
WO1988006389A1 (en) 1988-08-25
EP0279874A1 (de) 1988-08-31
DE3762790D1 (de) 1990-06-21
RU1775054C (ru) 1992-11-07
DE8717891U1 (de) 1990-12-06

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